The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 15, 2013
Filed:
Jul. 10, 2013
Hon Hai Precision Industry Co., Ltd., New Taipei, TW;
Cheng-Yi Lai, New Taipei, TW;
Chun-Cheng Ko, New Taipei, TW;
Hon Hai Precision Industry Co., Ltd., New Taipei, TW;
Abstract
An optical touch system includes a display screen having a contact surface, two infrared light sources emitting infrared light to cover the contact surface, two linear infrared sensors each having a sensing surface with a lengthwise direction thereof parallel to the contact surface, a processor, and a controller. Each linear infrared sensor captures an image of the contact surface with an infrared portion representing a touch area of a contact object, the image has an aspect ratio greater than that of the contact surface. The processor determines the touch location of the contact object based on the aspect ratios of the image and the contact surface, the location of the infrared portion on the image, the area of the infrared portion and the area of the touch portion of the contact object. The controller executes an instruction according to the determined location of the contact object.